Installation for supplying and circulating heated



Nov. l1, 1930. H. zwERLlNG 1,781,358

- INSTALLATION FOR SHPPLYING AND CIRCULATNG HEATED'OR COOLED AIR Filed April 2l, 1926 2 Sheets-Sheet l .Z7 ,Z3 Z6 1725.1 r-

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` 7J f -IL L14 l5 l l 70 I i l. Q i* r/l/ r pravi- ATTORNEY Nov. 11, 1930. H. zwi-:RLINGv 1,781,358

INSTALLATION FOR SUPPLY1NG AND CIRCULATING HEATED OR COOLED AIR ATTORNEY Parente ev. ii, ileso l HARRY ZWERLING, or

BROOKLYN, new Youn INSTALLATON FOR SUBPIYING AN D CIRCULATING' HEATED OB, COOLED .AIR

applicati@ me@ April 21,

This invention relates to Ventilating systems and more particularly is directed to improved installations for supplying and circulating heated or cooled air in dwellings and for other purposes.' One object of the invention is to provide in an installation of the character described, an improved air heating--and'cooling appa-l ratus which shall be relatively small, compact, and adapted to include a steam boiler of any standard make to form a self contained unit. Y

Another object of the invention `is to provide an improved installation of the charac- 15 ter describedadapted to be used with or without forced circulation whereby the heating and cooling effects ofithe air may be readily `controlled over a Wide range of desired temperatures. .20 A' further object of the invention is the i vprovision of lanin'stallation of the character described which is constructed of few and simple parts, relatively cheap to manufacture, easy tooperate, and practical and efficient to a high degree in use.

Other objects and advantages will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in fea- 3q tures of` construction, combination of elemetsand arrangement of parts which will be exemplified in the construction hereinafter discussed of which the scope of application will be indicated in the following claims.

In the accompanying drawing in which a possible embodiment of the invention is shown Fig. 1 is a side elevational view, partly in section, showing an installation for supplying and circulating heated and cooled air embodying the invention. .v

Figs. 2 and 3 are cross sectional views taken on lines 2?-2 and 3-3 in Fig. l, respectively. J

Fig. 4 is a fragmentary cross-sectionai view showing in detail the construction of the header and tubes of the radiator.'M

Fig. 5 is a fragmentaryvside elevational View, partly in section showing a modified 59 form of the invention.

1926. Serial No. 103,599.

Water sight and steam' pressure gages 13` and 12, respectively, the latter preferably being positioned over the furnace and\'cleanout7 doors 14 and l5 as shown in Fig. 1. 'lo, control the air supply to the boiler furnace a draft damper 16 may be provided in an airl duct 17 at the rear of said boiler and ifde sired a regulator 18 may be provided to auto-` matically open and close the damper 16 and control the fire in the boiler furnace according to the steam pressure generated, in a well understood manner.

Suitably supported over the boiler 10, there is a radiator 21 having spaced headers 22 which connect with the usual boiler steam outlet and drain return ttings 19 and 20, respectively, said radiator being positioned to `permit making said pipe connections therefrom to the boiler as short as possible so that a constant supply of steam to the radiator may be maintained with a minimum amount of heat. rllhe radiator 21 comprises besides the spaced headers 22, a plurality of horizontally disposed tubes 23, which interconnectl them preferably in staggered rows. Said headers may be of any suitable con struction and are preferably made of sheet metal, each header having an outwardly concave backing member 22a and a tube sheet 22".

As seen from Fig. 4, the edge portion of said tubev sheet and backing member are inter- ,foldingly clamped together to form a tight joint 24, the seams of said joint preferably being reinforced by welding or brazing.

rllhe tubes 23 may be secured to the tube sheet 22b in any well understood manner, as by rolling said tube ends and brazing and welding the seams at the rolled joints.

Surrounding the boiler. 10 and radiator 21 is a casing 25, the walls of which are spaced fromthe boiler but closely iit about the radi ator headers22 and tubes 23 as shown in Fig. 2. Said casing extends above the radiator 21 to provide a chamber-Which may be divided into compartments 26 by a suitable partition 27, said compartments communicating with a plurality of distributing lines 28. For minimizing the heat radiation losses from the casing surfaces,the casing is preferably j acketed with a heat insulating material 40. As shown in Figs. 1 and 2 the air supply duct 17, for the boiler furnace communicates with the chamber compartment26 over 'the radiator 21 so that heated air is supplied through said duct to the boiler furnace for increasing the efficiency of combustion, as is well understood.

To provide forced circulation of air through the casing 25, ablower 29 driven by any suitable means such as motor (not shown) 1 may be provided, the blower outlet'29zL being connected with the bottom portion 2 5a of the casing 25. 'The blower intake 29b connects with one end of any junction duct 30, the other end of said duct being connected to vreceive the recirculating air from a preheating box 31. There is also provided a branch 30a controlled by a damper 32 from said duct to the casing portion 25a for by-passing the blower 29, and a Vent 30", controlled by a damper 33, as shown in Fig. 3. j,

The wasted heat passing from the boiler furn'acethrough a pipe 34 having a damper 34a to the chimney 35 may be utilized by sul:- rounding a suitable length of said pipe by the box 31 for preheating recirculation air received from a return flue 37 prior to passing said air through the junction-duct 30 to the Thevoperation of the Ventilating system embodying the invention will now be described. ssuming the apparatus arranged as shown in Figs. 1, 2 and 3with'the distributing flues 28 or branches thereof carried to the different rooms or floors of the dwelling, and the return flue 37 preferably extending down from a central part o f said dwelling, the lboiler 10 is put operation to generate steam. lIf the weather is only moderately` Vcold forced," circulation of heated air can be dispensedwith so that the .blower 29 can shut down and the by-pass damper 32 opened, that is moved to the dotted line shown in Fig, 3. The air in the casing 25v about the boiler 10 and the radiator 21 will be heated and will rise up'th'rough the distributing flues 28 and y preheated recirculating air will be drawn into the casing 25 from the box, 31,A the junetion duct 30 and return flue 37. AIn mildly -co'ldweather the preheated recirculating air vmay be cut off by opening the-vent damper 33 and shutting olf the passage to the preheating box 31 and return flue 37, as shown in the dotted line position of thedamper 133 in Fig. 3. The air then passes into the junction duct 30 at the vent' 3()b through the bypass branch 30a then into the casing 25.

- When the weather is cold forced circulation gases from the radiator 21 when the system is used to supply heated air, an air valve 50 of any standard construction may be providedand installed in the system in the well understood manner. To adapt the YVentilating system for supplying and circulating cooled air during warm and hot weather, there is eX- te'nded horizontally from an upper portion of one of the radiator headers 22 to a drain or sewer (not shown) a pipe 51 having a. shutoff valve 52. To this pipe 51 between the said header 22 and thevalve 52, the air valve 50 providedwith a suitable cock 53 may be connected. l

In using the ventilating system to supply cooled air, the cock 53 is closed to prevent leakage at the air valve 5() and a'valve 54 provided inthe return drain line of the boiler connected with thelitting 20 is shut to cut ofi' the direct passage from the adjoining header 22 to the boiler. Now on opening wide the valve 52 and turning on the water supply to trickle or How slowly through feed water pipe 1,1, the boilenjacket 10a and radiator 21 may bevfilled and the water kept in constant circulationl therethrough at a relatively low water pressure. Operating the blower 29'is effective to cause the air" which is cooled bv contact with the boiler jacketL and the radiator water cooled surfacesto be distributed through the flues 28. The air may be recirculated or fresh air may be used by setting the -dampers of the junction duct 30 Ias is readily understood from Fig. 3. i

Where'the furnace equipment is installed incold surroundings and it is desirableto utilize portion of the heat radiated from the weather, the modied` form of construction shown in Fig. 5 may be used. Here the casing 122 is mounted on top of the boiler 10 so that the surface of the jacket of the latter serves to supply the necessary heat. Thus Aboiler jacket lto keep the neighboring water pipes or the like from freezing during cold' Y, Patent 1. An apparatus of the character described including a steam generating means, spaced means for radiating the heat in the steam generated, a casing for enclosing said generating andv radiating means, meansv for supl plying air to said casing, the walls of said casing being spaced from the generating means to provide a passage for the air about the latter, said cas-ing walls being fitted closely about the radiating means to direct all the air from said passage through said radiating means, and an air supply junctionduct having a plurality of branches connected to said passage.

2. An apparatus of the character described including a heat source having a water and steam jacket, a radiator formed with through passages heated by steam from the jacket, a casing enclosing said source and radiator, said casing forming a duct about said jacket, said duct and passages being positioned to receive a flow of air from one to the other in one direction, a blower for supplying the air connected with said duct, and means for ley-passing said blower whereby the air supplied is varied. 4

3. A ventilating system of the character described, a steam generating means, a ,steam radiator connected to generating means,y a

' casing for enclosing said means and radiator, means for supplying air under various pressures to the caslng, means for preheating the air prior to supplying same to casing, said preheating means receiving heat from said generating means, and lues veX- tending from said casing for distributing the air after being'heated by said generating means and radiator.

4. In a Ventilating system of the character described, a boiler, a radiator heated by steam generated in the boiler, said radiator compris- Y ing a pair of spaced headers interconnected by rows of parallelly aligned tubes, one of said headers being connected to the boiler steam outlet fitting and the other header to the boiler drain fitting, a casing enclosing the vboiler and radiator, and means for supplying air into said casing for passage through the latter, said headers being positioned in close proximity to the walls of said casing for directing the air in the casing transversely with respect to the length ofsaid rows of tubes.

5. A device of the character described for .one of said sources.

6. An apparatus of the character described including a heat source, a water and steam jacket surrounding said source, a radiator having through passages, said radiator having an inlet and return connection for circulatingtherethrough steam received from the jacket, a casing enclosing said j acketed source and radiator, said casing being spaced from said jacket to form a passage therebetween communicating with said radiator passages, means for supplying air to said casing passage, a water supply connected to said jacket, closure means in one of said radiator connections for cutting off communication therethrough with said jacket, and water draining means on said radiator spaced from said jacket to permit continuous iow of water through the acket and radiator for converting the latter into a heat absorbing means to cool the air in the passages.

7. lin a Ventilating system of the character described, a boiler, a radiator heated by steam generated in the boiler, said radiator comprising Va pair of spaced headers interconnected by rows of tubes, one of said headers being connected to the boiler steam outlet fitting and the other header to the boiler drain fitting, a valve interposed between said headers and said boiler fittings for cutting 01T the communication therethrough, a casing enclosing the boiler and radiator, means for supplying air into the casing, -a water supply connected to said boiler, and water draining means on one of said headers to permit a continuous flow of water through the headers and tubes for converting the radiator into a heat absorbing means for cooling the air passing between the tubes. j

In testimony whereof I aix my signature.

HARRY ZWERLING.

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